CN110056574A - A kind of magnetic bearing of high speed magnetic suspension motor - Google Patents
A kind of magnetic bearing of high speed magnetic suspension motor Download PDFInfo
- Publication number
- CN110056574A CN110056574A CN201910306271.2A CN201910306271A CN110056574A CN 110056574 A CN110056574 A CN 110056574A CN 201910306271 A CN201910306271 A CN 201910306271A CN 110056574 A CN110056574 A CN 110056574A
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- CN
- China
- Prior art keywords
- magnetic
- end cap
- magnetic bearing
- coil
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 20
- 239000003973 paint Substances 0.000 claims abstract description 12
- 239000011810 insulating material Substances 0.000 claims description 10
- 230000007774 longterm Effects 0.000 abstract description 8
- 238000007598 dipping method Methods 0.000 abstract description 3
- 239000004922 lacquer Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000000703 high-speed centrifugation Methods 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/0493—Active magnetic bearings for rotary movement integrated in an electrodynamic machine, e.g. self-bearing motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/09—Structural association with bearings with magnetic bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The present invention provides a kind of magnetic bearings of high speed magnetic suspension motor, the magnetic bearing includes bearing holder (housing, cover), magnetic coil and annular end cap, wherein, the bearing holder (housing, cover) is ring structure, including inner ring, outer ring and the annular groove between the inner ring and the outer ring；The magnetic coil is located in the annular groove, and the annular end cap is fixedly connected with the outer ring；N pole of the inner ring as the magnetic bearing, S pole of the annular end cap as the magnetic bearing.Magnetic bearing of the invention coats coil using bearing holder (housing, cover) and end cap, dipping lacquer, encapsulating are carried out using insulated paint around coil simultaneously, reinforce the insulating capacity of coil, become an entirety with season coil, ensure the stable magnetic field of coil, it avoids that rotor is caused to shake due to magnetic field is unstable, guarantees that magnetic suspension motor is used for long-term, stable and safe operation.
Description
Technical field
The present invention relates to magnetic levitation technology field more particularly to a kind of magnetic bearings of high speed magnetic suspension motor.
Background technique
With the development of science and technology with the demand of production, magnetic suspension high speed motor has become International Power area research
One of hot spot.Since magnetic suspension high speed motor has many advantages, such as that energy density is high, structure size is small, high-efficient, at present
It is widely used in the industrial circles such as miniature gas turbine, high speed centrifugation compressor, molecular pump, high-speed machining center, flywheel energy storage,
And its application field and range are still constantly expanding.
During the work time, the stability of rotor is the key that guarantee that motor is steady, efficient operation to magnetic suspension motor,
It is main purpose that motor is run steadily in the long term.The stability of rotor axial direction depends on the runnability of axial magnetic bearing,
Axial magnetic bearing can long-term, trouble free service be direct one of condition for determining motor working performance.
Summary of the invention
Present invention seek to address that problem as described above.It is an object of the present invention to provide in a kind of solution problem above
Any one magnetic bearing.Specifically, the present invention, which provides, can be suitable for that high speed magnetic suspension motor is long-term, magnetic of stable operation
Bearing.
In order to solve the above technical problems, the present invention provides a kind of magnetic bearing of high speed magnetic suspension motor, the magnetic axis
It contracts and includes bearing holder (housing, cover), magnetic coil and annular end cap, wherein the bearing holder (housing, cover) is ring structure, including inner ring, outer ring and is located at
Annular groove between the inner ring and the outer ring；The magnetic coil is located in the annular groove, the annular end cap with
The outer ring is fixedly connected；
N pole of the inner ring as the magnetic bearing, S pole of the annular end cap as the magnetic bearing.
Wherein, the magnetic bearing further includes insulating materials, and the insulating materials is locked in the annular groove, to described
Magnetic coil formation wraps.
Wherein, the insulating materials is insulated paint.
Wherein, the internal diameter of the annular end cap is greater than the outer diameter of the inner ring and is less than the internal diameter of the outer ring, the ring
The outer diameter of shape end cap is equal to the outer diameter of the outer ring.
Wherein, the upper surface of the annular end cap is provided with annular protrusion, the internal diameter of the annular protrusion and the annular
The internal diameter of end cap is equal, and the annular protrusion and the inner ring flush.
Wherein, the annular protrusion is used as the pole S of the magnetic bearing.
Wherein, the annular end cap is fixedly connected with the outer ring by n equally distributed connectors, wherein n is big
In the positive integer for being equal to 2.
Wherein, it is evenly distributed with n counterbore on the annular end cap, m × n perforation is evenly distributed on the outer ring
Threaded hole, wherein m is positive integer.
Wherein, the connector is sunk screw.
Magnetic bearing of the invention coats coil using bearing holder (housing, cover) and end cap, while insulated paint is utilized around coil
Dipping lacquer, encapsulating are carried out, the insulating capacity of coil is reinforced, becomes an entirety with season coil, it is ensured that the stable magnetic field of coil is kept away
Exempt from that rotor is caused to shake due to magnetic field is unstable, guarantees that magnetic suspension motor is used for long-term, stable and safe operation.
Being described below for exemplary embodiment is read with reference to the drawings, other property features of the invention and advantage will
It is apparent from.
Detailed description of the invention
It is incorporated into specification and the attached drawing for constituting part of specification shows the embodiment of the present invention, and with
Principle for explaining the present invention together is described.In the drawings, similar appended drawing reference is for indicating similar element.Under
Attached drawing in the description of face is some embodiments of the present invention, rather than whole embodiments.Those of ordinary skill in the art are come
It says, without creative efforts, other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 schematically illustrates the cross-sectional view of magnetic bearing of the invention；
Fig. 2 schematically illustrates the top view of magnetic bearing of the invention；
Fig. 3 schematically illustrates the cross-sectional view of bearing holder (housing, cover)；
Fig. 4 schematically illustrates the cross-sectional view of annular end cap.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.It needs
Illustrate, in the absence of conflict, the features in the embodiments and the embodiments of the present application can mutual any combination.
Inventor devises a kind of seperated, fill type magnetic bearing, utilizes the bearing holder (housing, cover) and annular end for having annular groove
Lid coats magnetic coil, while carrying out dipping lacquer processing to magnetic coil.It is recessed to annular after magnetic coil is put into annular groove
Insulated paint is poured into slot and carries out sealing, and not only magnetic coil is formed and is protected, but also increases the insulation performance of magnetic coil, it can also be by magnetic
Coil is fixed, and is formed whole, it is ensured that stable magnetic field, effectively avoid in use due to magnetic field it is unstable caused by electricity
The case where damage, is even fallen in machine rotor shake, it is ensured that motor is long-term, is safely operated；In addition, due to magnetic coil stable magnetic field,
Thrust disc uniform force, the stabilization of rotor are enabled, control force is promoted, rotor stable suspersion, rotation is effectively ensured.
With reference to the accompanying drawing, the magnetic bearing of provided high speed magnetic suspension motor according to the present invention is carried out specifically
It is bright.
Fig. 1 shows a kind of cross-sectional view of specific embodiment of the magnetic bearing of high speed magnetic suspension motor of the invention, Fig. 2
The top view of the magnetic bearing is then shown, comprehensive shown referring to Figures 1 and 2, which includes bearing holder (housing, cover) 1, magnetic coil 2
With annular end cap 3.Fig. 3 shows a kind of cross-sectional view of specific embodiment of bearing holder (housing, cover) 1, in conjunction with shown in Fig. 1 and Fig. 3, bearing holder (housing, cover) 1
For ring structure, including inner ring 11, outer ring 12 and the annular groove 13 between inner ring 11 and outer ring 12.Magnetic coil 2
In in annular groove 13, annular end cap 3 is fixedly connected with outer ring 12, forms structure of the magnetic coil 2 inside magnetic bearing 100,
Cladding, protection are formed to magnetic coil 2, the stable magnetic field of the formation of magnetic coil 2 is effectively ensured, and then ensures using the magnetic bearing
Magnetic suspension motor rotor stability is run when 100.Specifically, in use, inner ring 11 is used as the pole N of magnetic bearing 100,
Annular end cap 3 is used as the pole S of magnetic bearing 100.
In addition, magnetic bearing 100 of the invention further includes insulating materials 4, insulating materials 4 is locked in annular groove 13, right
The formation of magnetic coil 2 wraps.Illustratively, insulating materials 4 can select insulated paint.During installation, magnetic coil 2 is put into annular recessed
In slot 13, insulated paint then is injected into annular groove 13, sealing is carried out to magnetic coil 2, then stationary annular end cap 3 again.Tool
Body, can also it is first magnetic coil 2 is dipped in insulated paint after place into annular groove 13, then again into annular groove 13
After-teeming insulated paint enables position of the magnetic coil 2 in annular groove 13 fix.Sealing, a side are carried out to magnetic coil using insulated paint
Coating is formed in face of magnetic coil 2, cladding protection is formed to magnetic coil 2, prolongs the service life, magnetic coil 2 can also be increased
Insulating capacity；On the other hand magnetic coil 2 can be fixed, magnetic coil 2 is enabled to form an entirety, it is ensured that be powered in magnetic coil
When the stable magnetic field that is formed, effectively avoid because magnetic field it is unstable caused by rotor shake, even fall damage the case where generation；
In addition, the Distribution of Magnetic Field of this structure after powered up is uniform, stablizes, effectively ensure thrust disc uniform force, the control of rotor
Power processed increases, and is further ensured that rotor stable suspersion, rotating operation, and it is long-term, stable, safe that magnetic suspension motor is effectively ensured
Operation, improves the performance and used life of magnetic suspension motor.
Specifically, magnetic coil 2 selects copper coil, and coil number is greater than 200 circles；Insulating materials selects H class B insulation paint, high temperature resistant
180 DEG C, such as self-drying paint can be selected.
Illustratively, bearing holder (housing, cover) 1 and annular end cap 3 can select permeability magnetic material, such as 45# steel, to greatly increase it
Magnetic conduction ability enhances to the control ability of rotor, effectively reduces the calorific value of magnetic coil, long-term, even in magnetic suspension motor
During reforwarding row, the bulk temperature of magnetic suspension motor can reduce, further enhance the stability of magnetic suspension motor operation.
Specifically, in production, bearing holder (housing, cover) 1 and annular end cap 3 are all made of finishing, and carry out table again after combining the two
Face fine grinding, to guarantee service performance.
It should be pointed out that the internal diameter of annular end cap 3 is greater than the outer diameter of inner ring 11 and is less than the internal diameter of outer ring 12, ring
The outer diameter of shape end cap 3 is equal to the outer diameter of outer ring 12.That is, the outer ring of magnetic bearing 100 is smooth, smooth after annular end cap 3 is installed, and
Annular opening is then formed between annular end cap 3 and inner ring 11, the outlet at the both ends as magnetic coil 2, meanwhile, 3 He of annular end cap
Inner ring 11 is then used respectively as two different magnetic poles.
In the present embodiment, the upper surface of annular end cap 3 is provided with annular protrusion 31, the internal diameter and annular of annular protrusion 31
The internal diameter of end cap 3 is equal, i.e., annular protrusion 31 is arranged close to 3 inner surface of annular end cap.And annular protrusion 31 and 11 phase of inner ring
Concordantly.Specifically, annular protrusion 31 is used as the pole S of magnetic bearing 100, therefore annular protrusion 31 and the height of inner ring 11 are held
It is flat, the stable magnetic field of magnetic bearing can be effectively ensured.Further to guarantee that two magnetic pole of magnetic field is corresponding and balances, can also enable
The width of annular protrusion 31 is equal with the width of inner ring 11.
Annular end cap 3 is fixedly connected with outer ring 12 by n equally distributed connectors 5, to guarantee the jail of the two connection
Solidity, wherein n is the positive integer more than or equal to 2, for example, it may be the integers such as 4,5,6,8.
In order to guarantee the surfacing of the magnetic bearing 100 after connection, it is ensured that it is easily installed use, on annular end cap 3
Counterbore 32 is set, the threaded hole 14 to match is then set on outer ring 12, and the two is attached using sunk screw.It is exemplary
Ground is evenly distributed with n counterbore 32 on annular end cap 3, and the threaded hole 14 of m × n perforation is evenly distributed on outer ring 12,
In, m is positive integer；It is also possible to be uniformly arranged m × n counterbore 32 on annular end cap 3, n is uniformly distributed at outer ring 12
Threaded hole 14, in order to still be able to annular end cap 3 and outer ring 12 when some counterbore 32 or the failure of threaded hole 14
Uniform, firm installation is carried out, to guarantee the stable structure of magnetic bearing 100.Specifically, connector 5 can be selected as sunk screw,
For example, a word flat head screw or interior hexagonal flat head screw can be selected, the sunk screw of dedicated shape can also be selected.
In actual application, one magnetic bearing of the invention can be respectively set in the two sides of rotor thrust disc,
And inner ring 11 and annular protrusion 31 are arranged towards the direction of thrust disc, thrust disc uniform force, balance are effectively ensured, it is ensured that electricity
Machine rotor is quick, stablizes, safe operation.
Descriptions above can combine implementation individually or in various ways, and these variants all exist
Within protection scope of the present invention.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment comprising a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence " including one ... ", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of magnetic bearing of high speed magnetic suspension motor (100), which is characterized in that the magnetic bearing (100) includes bearing holder (housing, cover)
(1), magnetic coil (2) and annular end cap (3), wherein the bearing holder (housing, cover) (1) is ring structure, including inner ring (11), outer ring (12)
And the annular groove (13) between the inner ring (11) and the outer ring (12)；The magnetic coil (2) is located at the ring
In connected in star (13), the annular end cap (3) is fixedly connected with the outer ring (12)；
N pole of the inner ring (11) as the magnetic bearing (100), the annular end cap (3) is as the magnetic bearing (100)
The pole S.
2. magnetic bearing (100) as described in claim 1, which is characterized in that the magnetic bearing (100) further includes insulating materials
(4), the insulating materials (4) is locked in the annular groove (13), is formed and is wrapped to the magnetic coil (2).
3. magnetic bearing (100) as claimed in claim 2, which is characterized in that the insulating materials (4) is insulated paint.
4. magnetic bearing (100) as described in claim 1, which is characterized in that the internal diameter of the annular end cap (3) is greater than in described
It encloses the outer diameter of (11) and is less than the internal diameter of the outer ring (12), the outer diameter of the annular end cap (3) is equal to the outer ring (12)
Outer diameter.
5. magnetic bearing (100) as described in claim 1, which is characterized in that the upper surface of the annular end cap (3) is provided with ring
Shape protrusion (31), the internal diameter of the annular protrusion (31) is equal with the internal diameter of the annular end cap (3), and the annular protrusion
(31) with the inner ring (11) flush.
6. magnetic bearing (100) as claimed in claim 5, which is characterized in that the annular protrusion (31) is used as the magnetic bearing
(100) the pole S uses.
7. magnetic bearing (100) as described in claim 1, which is characterized in that the annular end cap (3) and the outer ring (12) are logical
It crosses n equally distributed connectors (5) to be fixedly connected, wherein n is the positive integer more than or equal to 2.
8. magnetic bearing (100) as claimed in claim 7, which is characterized in that be evenly distributed with n on the annular end cap (3)
Counterbore (32) is evenly distributed with the threaded hole (14) of m × n perforation on the outer ring (12), wherein m is positive integer.
9. magnetic bearing (100) as claimed in claim 7, which is characterized in that the connector (5) is sunk screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910306271.2A CN110056574B (en) | 2019-04-17 | 2019-04-17 | Magnetic bearing for high-speed magnetic suspension motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910306271.2A CN110056574B (en) | 2019-04-17 | 2019-04-17 | Magnetic bearing for high-speed magnetic suspension motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110056574A true CN110056574A (en) | 2019-07-26 |
| CN110056574B CN110056574B (en) | 2020-02-21 |
Family
ID=67319115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910306271.2A Active CN110056574B (en) | 2019-04-17 | 2019-04-17 | Magnetic bearing for high-speed magnetic suspension motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110056574B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645269A (en) * | 2019-08-20 | 2020-01-03 | 江苏理工学院 | Self-suspension axial magnetic suspension bearing |
| CN113623319A (en) * | 2021-07-08 | 2021-11-09 | 安徽华驰动能科技有限公司 | Magnetic suspension bearing with safety braking protection function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040227421A1 (en) * | 2003-05-16 | 2004-11-18 | Chien-Chang Wang | Magnetic suspension bearing |
| CN202451603U (en) * | 2012-02-24 | 2012-09-26 | 洛阳轴研科技股份有限公司 | Combined magnetic suspension bearing |
| CN102891636A (en) * | 2011-07-21 | 2013-01-23 | 天津昊高磁材有限公司 | Magnetic suspension motor capable of reducing leakage flux |
| CN104295518A (en) * | 2014-09-28 | 2015-01-21 | 南京磁谷科技有限公司 | Magnetic levitation overspeed test bed for impeller overspeed test |
| CN106321633A (en) * | 2016-11-07 | 2017-01-11 | 湘潭大学 | Novel mixing magnetic bearing |
-
2019
- 2019-04-17 CN CN201910306271.2A patent/CN110056574B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040227421A1 (en) * | 2003-05-16 | 2004-11-18 | Chien-Chang Wang | Magnetic suspension bearing |
| CN102891636A (en) * | 2011-07-21 | 2013-01-23 | 天津昊高磁材有限公司 | Magnetic suspension motor capable of reducing leakage flux |
| CN202451603U (en) * | 2012-02-24 | 2012-09-26 | 洛阳轴研科技股份有限公司 | Combined magnetic suspension bearing |
| CN104295518A (en) * | 2014-09-28 | 2015-01-21 | 南京磁谷科技有限公司 | Magnetic levitation overspeed test bed for impeller overspeed test |
| CN106321633A (en) * | 2016-11-07 | 2017-01-11 | 湘潭大学 | Novel mixing magnetic bearing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645269A (en) * | 2019-08-20 | 2020-01-03 | 江苏理工学院 | Self-suspension axial magnetic suspension bearing |
| CN110645269B (en) * | 2019-08-20 | 2020-09-15 | 江苏理工学院 | Self-suspension axial magnetic suspension bearing |
| CN113623319A (en) * | 2021-07-08 | 2021-11-09 | 安徽华驰动能科技有限公司 | Magnetic suspension bearing with safety braking protection function |
| CN113623319B (en) * | 2021-07-08 | 2023-06-30 | 安徽华驰动能科技有限公司 | Magnetic suspension bearing with safety braking protection function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110056574B (en) | 2020-02-21 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A magnetic bearing for high-speed maglev motors Granted publication date: 20200221 Pledgee: Bank of Communications Ltd. Weifang branch Pledgor: SHANDONG TIANRUI HEAVY INDUSTRY Co.,Ltd. Registration number: Y2024370000015 |
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